Publications by authors named "Cosimo C Rusconi"
Article Synopsis
- Electric quadrupole traps effectively levitate charged objects, from protons to small particles, influencing their rotational behavior when charge distribution varies.
- Experiments reveal a shift in motion for microparticles, transitioning from librational to synchronized rotation with the trap drive due to torque effects from the electric quadrupole.
- This technique showcases versatility by spinning various particles like silicon microrods and microdiamonds, with the latter enabling detailed motion analysis through embedded nitrogen vacancy centers, promising advances in levitated quantum nanomechanics.
We describe how to prepare an electrically levitated nanodiamond in a superposition of orientations via microwave driving of a single embedded nitrogen-vacancy (NV) center. Suitably aligning the magnetic field with the NV center can serve to reach the regime of ultrastrong coupling between the NV and the diamond rotation, enabling single-spin control of the particle's three-dimensional orientation. We derive the effective spin-oscillator Hamiltonian for small amplitude rotation about the equilibrium configuration and develop a protocol to create and observe quantum superpositions of the particle orientation.
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